Luth-AR .308 Rifle Buffer for AR-10 Rifles

SKU: 308-BS-11

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.308 Carbine Spring

Luth-AR .308 Carbine Buffer Spring for AR-10/LR308 Rifles


Luth-AR .308 Mil-Spec Rifle Fixed Buffer Tube Kit

Luth-AR .308 Mil-Spec Rifle Fixed Buffer Tube Kit


Rifle Length Buffer for AR-10

The Luth-AR .308 Rifle Buffer works in AR-10 or LR308 pattern rifles with A1/A2 length receiver extension tubes. This buffer weighs in at 5.35 oz, with an aluminum body, tungsten weights inside, and a rubber bumper. If you need a complete .308 recoil assembly, check out the Luth AR .308 fixed buffer tube kit, with fixed buffer tube, .308 rifle buffer spring, and .308 rifle buffer.

Note: Do not use this buffer in six position buffer tubes. You must use a long A1/A2 length tube. Do not use this buffer in AR-15 rifle platforms.


  • Fit: AR-10/LR308 Rifles with A1/A2 Length Buffer Tubes
  • Weight: 5.35 oz
  • Length: 5.25 inches

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Luth-AR Limited Warranty

  • Luth-AR, LLC manufactured products are warranted for 1 (one) year from the date of purchase against manufacturing defects in material and/or workmanship. All parts and labor or replacement, at our option, are covered.
  • Government fees, damage caused by failure to perform normal maintenance, sales outside the United States, damage due to high velocity, high pressure, reloaded, or other non-standard ammunition, or any unauthorized repair, modification, misuse, abuse, or alteration of the product is not covered by this limited warranty.
  • Consumable items such as gas rings, O’ rings, etc., are not warranted.
  • Luth-AR, LLC complete assembled uppers will be warranted for a period of 1 (one) year after the complete upper was purchased.
  • The warranty applies towards defects in materials or workmanship of the complete upper. Luth-AR will pay for all warranty repairs, at no charge to the consumer. Please supply a copy of the invoice for proof of purchase.
  • The use of re-load ammunition, proof rounds, or factory ammunition that exceeds initial SAAMI specifications voids any warranty. Any repairs or modifications not done by Luth-AR also voids any warranty.
  • Complete uppers not assembled or built by Luth-AR are not covered by the 1 (one) year warranty.
  • Please call our warranty department at (763) 263-0166 or email for any warranty issues.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.